Condensed Consolidated Statements of Operations (Unaudited) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Jan. 31, 2014
Jan. 31, 2013
Revenues $ 7,683 $ 7,458 $ 21,787 $ 17,853
Cost of revenues 4,761 4,655 13,629 11,250
Gross margin 2,922 2,803 8,158 6,603
Selling, general and administrative expenses:        
Research and development expense 475 411 1,398 1,245
Selling and marketing expense 760 529 1,927 1,636
General and administrative expense 796 717 2,373 2,105
Total selling, general and administrative expenses 2,031 1,657 5,698 4,986
Operating income 891 1,146 2,460 1,617
Financial income (expense):        
Interest expense (14) (15) (43) (51)
Other income, net (1) (2) (4) (3)
(15) (17) (47) (54)
Net income before income tax expense 876 1,129 2,413 1,563
Income tax expense 307 413 927 595
Net income $ 569 $ 716 $ 1,486 $ 968
Net income per share information:        
Basic (in Dollars per share) $ 0.15 $ 0.18 $ 0.39 $ 0.25
Diluted (in Dollars per share) $ 0.14 $ 0.18 $ 0.38 $ 0.25
Weighted average common shares outstanding:        
Basic (in Shares) 3,814 3,914 3,856 3,895
Diluted (in Shares) 3,953 3,925 3,947 3,904